Clinical signs of alcohol intoxication as markers of refusal to provide blood alcohol readings in emergency rooms: an exploratory study

Substance use and type of Road Traffic Injury in Mexico City

Limited data are available in Mexico on the prevalence of alcohol and drug use and the possible differences in their effects on types of road traffic injury (RTI), such as those involving pedestrians, drivers or passengers of motorcycles or other motor vehicles, and the association between substance use and driving behaviors, for preventive purposes. The sample comprised 433 adult RTI patients, admitted to the emergency department (ED) of a public hospital in Mexico City (January to April 2022). Breath Alcohol Concentration (BAC) was measured using a breath tester, and six types of drugs (amphetamines, barbiturates, benzodiazepines, cannabis, cocaine, and methamphetamine) were assessed using a saliva screen test. RTI patients also self-reported their alcohol and drug use in the six hours prior to the accident. Approximately 62% of respondents had been involved in a motorcycle crash. One in three patients self-reported or had traces of a substance in their saliva or breath. The most common substance was alcohol (23.6%), followed by cannabis and stimulants (10.9%). One in five patients reported having used a cell phone ten minutes before the injury. One in three had not been using any safety device, the only behavior exacerbated by substance use. We found a high prevalence of substance use in the sample of RTI patients admitted to the ED, regardless of the type of the RTI, together with high cell phone rates. Motorcycle passengers under the influence were particularly likely not to have been wearing a helmet.

Recognizing and Caring for the Intoxicated Patient in an Outpatient Clinic

Recognizing an intoxication syndrome in patients presenting to an outpatient clinical practice with behavior or mental status change requires initial consideration of a broad differential diagnosis. After a thorough evaluation, management may include treatment of the presenting concern, triage to a higher level of care, and management substance withdrawal. Providers should be aware of the medico-legal aspects of caring for intoxicated patients related to privacy, informed consent, and risk of harm to self and others upon leaving clinic. An essential aspect of care for patients presenting to clinic intoxicated is the follow up assessment and management of substance use disorders.